Home / 120,989.03-181,397.09-56,911.30

Finding the Fourth Proportional to 120,989.03, 181,397.09 and 56,911.30

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Solution

The fourth proportional to 120,989.03, 181,397.09 and 56,911.30 is: 85,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,989.03 : 181,397.09 = 56,911.30 : x
  2. Step 2: Convert to fraction form
    120,989.03/181,397.09 = 56,911.30/x
  3. Step 3: Cross multiply
    120,989.03x = 181,397.09 × 56,911.30
  4. Step 4: Simplify right side
    120,989.03x = 10,323,543,896.90
  5. Step 5: Solve for x
    x = 10,323,543,896.90/120,989.03
  6. Step 6: Final answer
    x = 85,326.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.